Doherty PA Design from Load-pull Derived EPHD Models

The Doherty configuration offers a cost-effective solution for achieving a low distortion yet efficient amplifier. To properly design a Doherty PA, engineers need suitable RF circuit simulation technology, including harmonic balance, circuit envelope, load-pull analysis, as well as design automation and accurate device models. This talk presents basic Doherty PA theory and design methodology featuring specific simulation and design automation capabilities within Microwave Office circuit design software. The design example is based on an enhanced polyharmonic distortion (EPHD) GaN model provided by AMCAD Engineering.

Presented by: David Vye, Cadence